Exercise board



FIG. 1 is a front and right side perspective view of an exercise boardillustrating my new design;

FIG. 2 is a top view thereof;

FIG. 3 is a bottom view thereof;

FIG. 4 is a front view thereof;

FIG. 5 is a back view thereof;

FIG. 6 is a right side view thereof; and,

FIG. 7 is a left side view thereof.

The broken line showing of portions of the exercise board depictsenvironment and forms no part of the claim.

CLAIM The ornamental design for an exercise board, as shown anddescribed.